TL;DR: A 2026 study in Scientific Reports used the German TwinLife panel (228 monozygotic and 212 same-sex dizygotic twin pairs) to show that intelligence quotient (IQ) at age 23 predicted four socioeconomic status (SES) outcomes at age 27, with genetic factors explaining 69-98% of the IQ-SES association. Key Findings IQ at age 23 predicted SES …
TL;DR: A 2025 meta-analysis in the Journal of Attention Disorders pooled 24 studies (N=6,815) and estimated that 11.31% of children and adolescents with ADHD had co-occurring depression — about six times the rate seen in neurotypical peers in head-to-head case-control studies (~12% vs ~2%). Key Findings Pooled depression rate of 11.31% across 24 studies: The …
TL;DR: A 2026 Mendelian randomization study in Progress in Neuro-Psychopharmacology & Biological Psychiatry used genetic data to test direction of effect between brain structure and neurodevelopmental conditions, and found that increased surface area in the superior frontal gyrus raised ADHD risk while increased surface area in the orbital frontal gyrus protected against autism — with …
TL;DR: A 2026 Communications Biology fMRI study found that language and theory of mind, the ability to infer other people’s mental states, were already neurally distinct in children aged 3-9 rather than slowly separating during development. Key Findings Children show distinct neural specificity for language and theory of mind in superior temporal lobe — just …
TL;DR: A 2024 Gastroenterology study found that intestinal epithelial serotonin reduced anxiety- and depression-like behavior in mice through vagal signaling, while prenatal SSRI exposure in a human cohort predicted infant functional constipation independent of maternal depression. Key Findings Gut-only serotonin reuptake transporter ablation reduced anxiety and depression-like behavior: Targeting SERT only in the intestinal epithelium …
TL;DR: A 2026 medRxiv preprint found that ex-smokers had higher fMRI blood oxygen level dependent (BOLD) responses to high-energy food pictures than adults with obesity or abstinent alcohol dependence, suggesting a brain reward route for post-quitting weight gain. Key Findings 77-person fMRI comparison: Researchers compared 25 ex-smokers, 26 abstinent adults with alcohol dependence, and 26 …
TL;DR: A 2026 rat study in Neurobiology of Stress found that early-life visceral stress produced adult IBS-like symptoms alongside auditory brainstem sensitization and cochlear protein changes, giving a mechanistic explanation for sound sensitivity reported by some IBS patients. Key Findings Early-life visceral stress sensitized the auditory brainstem: Rats exposed to early-life visceral stress (the standard …
TL;DR: A 2026 study in Frontiers in Psychology found that braless images were rated as more attractive but less faithful, while women who feared sexual harassment reported being less likely to go braless in public. Key Findings 409 Slovak women surveyed: Researchers asked women about bra wearing in public and private settings, body-related factors, sexual …
TL;DR: A 2026 study in PLOS One found that Big Five personality traits were linked to how often 5,225 partnered adults reported sexual fantasies: conscientiousness and agreeableness predicted lower fantasy frequency, while the depression facet of negative emotionality predicted higher frequency. Key Findings Partnered adult sample: researchers surveyed 5,225 partnered adults recruited through Qualtrics Panels, …
TL;DR: A 2026 Communications Biology transcriptomic analysis identified three molecular subtypes of autism spectrum disorder, each linked to a distinct phenotypic profile and biological pathway pattern. Key Findings Three molecular subtypes emerged from transcriptomic analysis: Researchers identified three distinct molecular subtypes of autism spectrum disorder using transcriptomic data, each with its own gene expression signature. …
